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• W2021686569 abstract "Laryngeal neuroendocrine neoplasms are divided into two broad categories based on their tissue of origin: epithelial and neural [1]. Laryngeal epithelial neuroendocrine neoplasms are all malignant lesions (carcinomas) and are a subset of neoplasms that share specific morphologic, histochemical, immunohistochemical, ultrastructural and molecular characteristics. The major categories of laryngeal neuroendocrine carcinomas are typical carcinoid (well differentiated neuroendocrine carcinoma), atypical carcinoid (moderately differentiated neuroendocrine carcinoma), small cell neuroendocrine carcinoma (poorly differentiated neuroendocrine carcinoma) and large cell neuroendocrine carcinoma (poorly differentiated neuroendocrine carcinoma) [2]. The neural category consists only of paraganglioma which is invariably benign [3]. Although neuroendocrine neoplasms are uncommon in the larynx, they represent the most common non-squamous neoplasms arising in this area and to date more than 700 cases of them have been reported in the literature [1]. The atypical carcinoid is the most frequent laryngeal neuroendocrine carcinoma, followed by small cell neuroendocrine carcinoma, carcinoid tumor, and large cell neuroendocrine carcinoma. However, in the past large cell neuroendocrine carcinoma was classified under the umbrella term of atypical carcinoid so it may actually be more common than previously realized [4]. Accurate classification of the laryngeal epithelial neuroendocrine carcinomas requires knowledge of specific pathologic criteria separating the major categories. Neuroendocrine carcinomas of the larynx have widely varying prognosis, clinical management, and response to therapy. Thus, accurate classification is essential. Immunohistochemistry is an important diagnostic adjunct in the evaluation of these tumors, as it allows for definitive demonstration of neuroendocrine differentiation. For typical carcinoid, conservation surgery, particularly supraglottic laryngectomy, may be suitable because the supraglottis is the most frequent site of involvement. Transoral CO2 laser surgery can be a good alternative for appropriate cases because of the functional results and lower morbidity [5]. Elective neck dissection is not warranted. Bilateral selective neck dissection (levels II and III) is only indicated for clinically or pathologically proven cervical metastases [6]. The mainstay of treatment for atypical carcinoid of the larynx is surgical resection. As most tumors are located in the supraglottis, supraglottic laryngectomy is often the procedure of choice. Transoral CO2 laser surgery has been also employed to resect these tumors with oncologically sound results and with low morbidity [7]. Elective neck dissection appears to be warranted in view of the high incidence of both early cervical metastasis and subsequent involvement of cervical lymph nodes. Bilateral dissection of sublevel IIA and level III is only adequate for elective surgical treatment of the neck in supraglottic tumors [8]. Bilateral selective neck dissection (levels II and III) should be used therapeutically for metastatic disease. Post-operative radiotherapy is indicated in the presence of cervical lymph node metastases. Painful skin metastases from an This paper was written by members of the International Head and Neck Scientific Group (www.IHNSG.com)." @default.
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• W2021686569 date "2011-06-17" @default.
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• W2021686569 title "The evolving management of laryngeal neuroendocrine carcinomas" @default.
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• W2021686569 doi "https://doi.org/10.1007/s00405-011-1666-z" @default.
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